Elevator installation

Abstract

An elevator installation has a car at least partially supported by a support including several electrically conductive tension-bearing elements, which elements are arranged parallel to each other and which are substantially surrounded by a jacket. The support is fastened to fastening devices, wherein the fastening devices each include a housing and a clamping element. The housing and the clamping element each have clamping surfaces, between which surfaces the support is clamped. An electrically insulating material is arranged between at least one side of the support and the clamping surfaces arranged thereon. The electrically insulating material electrically isolates the support from the housing or the clamping element or both.

The invention claimed is: 
     
       1. An elevator installation having a car at least partly supported by a support including a plurality of electrically conductive tensile carriers arranged parallel to one another and substantially encased by a casing, the support having a first side and a second side, the support being fastened to support fastening devices, the support fastening devices each comprising:
 a housing having housing clamping surfaces; 
 a clamping element having clamping element clamping surfaces wherein the support is clamped between the housing clamping surfaces and the clamping element clamping surfaces; and 
 an electrically insulating material arranged at the housing clamping surfaces and the clamping element clamping surfaces to electrically separate the support from the housing and the clamping element. 
 
     
     
       2. The elevator installation according to  claim 1  wherein the first side of the support is a traction side that is in contact with a drive pulley of a drive, wherein the second side of the support is a rear side and wherein the electrically insulating material is arranged between the rear side and one of the housing clamping surfaces and the clamping element clamping surfaces. 
     
     
       3. The elevator installation according to  claim 2  wherein longitudinal ribs are formed on the traction side of the support. 
     
     
       4. The elevator installation according to  claim 1  wherein the electrically insulating material is arranged between the first and second sides of the support and the clamping surfaces of the housing and the clamping element. 
     
     
       5. The elevator installation according to  claim 1  wherein the electrically insulating material is formed as a film. 
     
     
       6. The elevator installation according to  claim 5  wherein the film is inserted and clamped in place between the support and the clamping surfaces of at least one of the housing and the clamping element. 
     
     
       7. The elevator installation according to  claim 1  wherein the electrically insulating material is formed as an adhesive tape. 
     
     
       8. The elevator installation according to  claim 7  wherein the adhesive tape is glued to at least one of the support and the clamping surfaces. 
     
     
       9. The elevator installation according to  claim 1  wherein the electrically insulating material is formed as a coating. 
     
     
       10. The elevator installation according to  claim 9  wherein the coating is coated on at least one of the housing clamping surfaces and the clamping element clamping surfaces. 
     
     
       11. The elevator installation according to  claim 9  wherein the coating is one of a powder, a wet lacquer, a ceramic, an enamelling and a polytetrafluoroethylene material. 
     
     
       12. The elevator installation according to  claim 9  wherein the coating has a layer thickness of 5 to 1,000 micrometers. 
     
     
       13. The elevator installation according to  claim 9  wherein the coating has a layer thickness of 10 to 500 micrometers. 
     
     
       14. The elevator installation according to  claim 9  wherein the coating has a layer thickness of 15 to 300 micrometers. 
     
     
       15. The elevator installation according to  claim 1  wherein the clamping element is formed as a wedge. 
     
     
       16. A support fastening device for an elevator installation having support belt, the support fastening device comprising:
 a housing having clamping surfaces; 
 a clamping element having clamping surfaces, the support belt being clamped between the clamping surfaces of the housing and the clamping element; and 
 an electrically insulating material coating the clamping surfaces of the housing and the clamping element wherein during use of the support belt the support belt is electrically insulated from the housing and the clamping element by the electrically insulating material. 
 
     
     
       17. The support fastening device according to  claim 16  wherein the coating is one of a powder, a wet lacquer, a ceramic, an enamelling and a polytetrafluoroethylene material.